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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 3, Iss. 11 — Oct. 22, 2008

Optical sectioning by multiexcitonic ladder climbing in colloidal quantum dots

Nir R. Ben-Haim and Dan Oron  »View Author Affiliations


Optics Letters, Vol. 33, Issue 18, pp. 2089-2091 (2008)
http://dx.doi.org/10.1364/OL.33.002089


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Abstract

Optical sectioning is performed by collecting the fluorescent emission of two-exciton states in colloidal quantum dots. The two-exciton state is created by two consecutive resonant absorption events, thus requiring unprecedented low excitation energy and peak powers as low as 10 5 W cm 2 . The depth resolution is shown to be equivalent to that of standard multiphoton microscopy, and it was found to deteriorate only slowly as saturation of the two-exciton state is approached, owing to signal contribution from higher excitonic states.

© 2008 Optical Society of America

OCIS Codes
(180.6900) Microscopy : Three-dimensional microscopy
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

ToC Category:
Microscopy

History
Original Manuscript: May 21, 2008
Revised Manuscript: July 21, 2008
Manuscript Accepted: July 28, 2008
Published: September 10, 2008

Virtual Issues
Vol. 3, Iss. 11 Virtual Journal for Biomedical Optics

Citation
Nir R. Ben-Haim and Dan Oron, "Optical sectioning by multiexcitonic ladder climbing in colloidal quantum dots," Opt. Lett. 33, 2089-2091 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-33-18-2089

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